I have a 52mm hood for 50mm lenses, 35mm format, which I want to fit on my Nikkor-W 150mm for 4x5. Am I right to assume that there will be no vignetting and that the two formats are compatible as they are the same focal length?
This question doesn't mention anything about movements etc....So try your lens without a lens hood and then with and find out. If it doesn't then try and get it to i.e. stopped right down and with movements. Then find your limits.
Of course when one does this, you can't see if the darkslide is in the image when the exposure is made, so it introduces the possibility for a new kind of error. Don't ask me how I know.